using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class LineFontMeshWriter : ProceduralMeshFilter {
    public LineFontMeshWriter(IProceduralMeshFilter next):base(next)
    { }

    public LineFontMeshWriter WriteText(string text)
    {
        float tabLength = 4 * LineFont.Chars[0].Width;
        float lineSize = 32 + 2;

        float x = 0.0f;
        float y = 0.0f;

        char firstChar = (char)32;
        char lastChar = (char)(firstChar + LineFont.Chars.Count - 1);

        for (int i = 0; i < text.Length; ++i)
        {
            char charID = text[i];

            if (charID >= firstChar && charID <= lastChar) {
                int p = charID - firstChar;
                var vChar = LineFont.Chars[p];
                for (int j = 0; j < vChar.Vertices.Count; j++) {
                    Next.Vertex(vChar.Vertices[j] + new Vector2(x, y));
                    //appendVertex(position, lineFont[p].vertices[i] + ScreenOffsetType(x, y));
                }
                x += vChar.Width;
                continue;
            }


            if (charID == '\n') {
                x = 0;
                y -= lineSize;
                continue;
            }

            if (charID == '\t') {
                x += tabLength;
                continue;
            }
		}

        return this;
    }
}